Lochinvar 2072, 502 Check relief valve Inspect/replace hot surface igniter, Check all wiring

Page 59

 

 

Installation & Operation Manual

8 Maintenance (continued)

 

 

Check relief valve

Inspect/replace hot surface igniter

1.Inspect the relief valve and lift the lever to verify flow. Before operating any relief valve, ensure that it is piped with its discharge in a safe area to avoid severe scald potential. Read Section 4 - Water Connections of the Copper-fin2Installation and Operation Manual before proceeding further.

This unit uses a proven SMART SYSTEM control module and a hot surface igniter. The SMART SYSTEM control module is not repairable. Any modification or repairs will invalidate the warranty.

￿WARNING

Safety relief valves should be re-inspected

AT LEAST ONCE EVERY THREE YEARS, by a licensed plumbing contractor or authorized inspection agency, to ensure that the product has not been affected by corrosive water conditions and to ensure that the valve and discharge line have not been altered or tampered with illegally. Certain naturally occurring conditions may corrode the valve or its components over time, rendering the valve inoperative. Such conditions are not detectable unless the valve and its components are physically removed and inspected. This inspection must only be conducted by a plumbing contractor or authorized inspection agency

–not by the owner. Failure to re-inspect the pool heater relief valve as directed could result in unsafe pressure buildup, which can result in severe personal injury, death, or substantial property damage.

￿WARNING Do not attempt to repair a faulty hot surface igniter or control module. Any modification

or repairs may create hazardous conditions that result in property damage, personal injury, fire, explosion and/or toxic gases.

A faulty hot surface igniter or control module must be replaced with an identical part. A specification igniter and control module for this specific unit is available from your local distributor. Do not use general purpose field replacement control modules or igniters.

Ignition system checkout

1.

Turn off gas supply to unit.

2.

Turn electric power on.

3.

Adjust the set point on the temperature control to a

 

setting above water temperature or to the highest safe

 

setting.

4.

The igniter will cycle on trial for ignition.

5.

The control module will lock out and turn the alarm

 

light on.

￿WARNING

Following installation, the valve lever must be operated AT LEAST ONCE A YEAR to ensure that waterways are clear. Certain naturally occurring mineral deposits may adhere to the valve, rendering it inoperative. When manually operating the lever, water will discharge and precautions must be taken to avoid contact with hot water and to avoid water damage. Before operating lever, check to see that a discharge line is connected to this valve directing the flow of hot water from the valve to a proper place of disposal. Otherwise severe personal injury may result. If no water flows, valve is inoperative. Shut down the appliance until a new relief valve has been installed.

6.

Adjust the Set Point Differential and High-Fire Offset to

 

the desired settings.

7.

Turn on gas supply.

8.

Press the RESET button at the electronic display panel to

 

reset the control module.

9.

If ignition system fails to operate properly, repair work

 

must be performed by a qualified service person or

 

installer.

Check all wiring

1.Inspect all wiring, making sure wires are in good condition and securely attached.

Check control settings

2.After following the above warning directions, if the relief valve weeps or will not seat properly, replace the relief valve. Ensure that the reason for relief valve weeping is the valve and not over-pressurization of the system due to expansion tank waterlogging or undersizing.

1.Set the SMART SYSTEM control module display to Parameter Mode and check all settings. Reference the Copper-fin2Service Manual for how to adjust settings and parameters. Adjust settings if necessary.

2.Check settings of external limit controls (if any) and adjust if necessary.

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Contents Save this manual for future reference Installation & Operation Manual Models 502Contents Removal of Combustion Chamber Lining or Base Panels Please read before proceedingSpecial instructions Owner warning Safety informationCopper-fin2- How it works Copper-fin2- How it works Copper-fin2- How it works Ratings SpecificationsFreeze protection Determine unit locationLocation of unit Indoor clearances from combustible constructionCombustion and ventilation air Outdoor pool heater installationLocation Hydronic systems anti-freezeMinimum Recommended Combustion AIR Supply to Equipment Room Outside Combustion Air Using Direct VentingCombustion air filter Exhaust fansCAT I Negative pressure non-condensing VentingIdentify your appliance’s vent system CAT IV Flue pipe materialsDraft Venting Vent system optionsBarometric damper location General informationVenting support Common Venting Systems Conventional negative draft venting seeNegative draft Flue outlet pipingInspection of a masonry chimney Masonry chimney installationsVertical vent termination clearances and location 1Vent Termination from Peaked Roof 10 ft. or Less From Ridge Sidewall air inlet Vertical DirectAire venting seeCombustion air inlet piping Length of air inlet pipeClearances Vertical Rooftop Air InletCombined air inlet points Directaire Kits Model Horizontal KIT Vertical KIT Venting of flue productsSidewall vent termination clearances and location Sidewall venting seeSidewall with fan Sidewall venting terminationSidewall venting without fan Drain tee installationModels 502 Venting of flue products Horizontal DirectAire venting Powered Venting seeVertical DV venting termination Direct venting seeFlue outlet piping Combustion air inlet piping Masonry chimney installationHorizontal DV venting termination Horizontal Vent Termination Clearances and LocationSealing PVC, CPVC, ABS, dryer vent, and flex duct vent pipe Connecting the air inlet pipe to the unitAir inlet piping materials Length of air inlet pipeVertical Combustion Air Inlet Clearances Multiple sidewall direct vent installationsVertical and sidewall combustion air inlet Horizontal combustion air inlet clearancesOutdoor vent cap kit Outdoor installation seeOutdoor vent/air inlet location Gas pressure test Connecting to gas supplyGas connections Gas connectionVenting of combination gas valves Suggested GAS Pipe Size for Single Unit Installations ModelCombination gas valves Gas train and controlsChecking gas supply pressure GAS Piping Size Chart992 1442 Models Water connectionsCirculating pump 502 752 ModelsAuxiliary Mixed Water Limit Control Heat exchangerInitial set-up of maximum water flow Minimum Pump Performance3Heater Within 15 feet of Pool Piping 6Cascaded Heaters Beyond 15 feet of Pool Piping Pool Return Sensor Location MIN Primary Outdoor operation 3-way valve cover Automatic bypass valve cover installationPumped Automatic Bypass Relief valve Water flow switchPump purge delay Pump purge pre-running delayElectrical connections Way automatic bypass valve wiringWay Automatic Bypass Valve Wiring Remote Wire ConnectionAMP Draw Data Installation must comply withPool heater operating control module Line voltage connectionsLow voltage connections Louver proving switchPool return sensor 2-wire Pool supply/limit sensor 4-wireWiring of the cascade Alarm contactsCheck for gas leaks Pre-start checklistStartup Starting the filter systemStart the pool heater Check thermostat circuitsCheck vent and air piping Placing the pool heater in operation2Operating Instructions Set clock Configuration of the cascadeGeneral Operating informationPool heater temperature regulation Sequence of the cascade DAY Switching on SequenceCascade Sequence of operation Copper-fin2control module MENU/EXIT Display Screen ENTER/RESET UpdownTo save parameters and exit programming Access modesInstaller UserStatus display screens STG Demand Unit Pump DelaySysrtn Open Sysrtn ShortedOwner maintenance Maintenance Maintenance and annual startupService technician Inspect appliance interior MaintenanceAddress reported problems Inspect appliance areaIgnition system checkout Check all wiringCheck control settings Check relief valve Inspect/replace hot surface igniterCheck flue gas passageways Inspect and clean burnerPerform start-up and checks Check burner flame Oiled bearing circulators Review with ownerDigital Harness Connection diagramController LOW Voltage Ladder diagramRuntime Contacts 2BOARDCONNECTION Outdoor S5SENSOR POOL2ND Page
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2072, 502 specifications

Lochinvar 2072,502 is an innovative and robust water-heating solution tailored for residential and commercial applications. This model represents a significant advancement in energy efficiency and performance, catering to the dynamic heating requirements of modern buildings.

One of the standout features of Lochinvar 2072,502 is its advanced thermal efficiency. With an impressive AFUE (Annual Fuel Utilization Efficiency) rating, the unit delivers exceptional heat output while minimizing energy consumption. This not only reduces utility bills for homeowners and businesses but also supports sustainability efforts by decreasing carbon footprints.

The Lochinvar 2072,502 incorporates cutting-edge technologies that set it apart in the market. It is equipped with advanced control systems that allow users to precisely manage heating outputs, ensuring optimal comfort while conserving energy. The user-friendly digital display provides real-time data, allowing for efficient monitoring and control.

Another significant characteristic of the Lochinvar 2072,502 is its robust stainless-steel construction. This feature enhances the unit's durability and longevity, ensuring reliable performance even in challenging conditions. The high-quality materials also contribute to maintaining consistent water temperatures, which is essential for both residential and commercial heating needs.

The Lochinvar 2072,502 operates silently, making it ideal for installations in areas where noise is a concern. Its compact design allows for flexible installation options, fitting seamlessly into various spaces, whether it’s a utility room, basement, or outdoor area.

Furthermore, the unit supports multiple venting options, accommodating different building architectures and layouts. This versatility makes it an ideal choice for new builds and retrofitting existing systems.

Maintenance is streamlined with the Lochinvar 2072,502, as it features a self-diagnostics system that simplifies troubleshooting. Regular service check-ups are made easier with accessible components, allowing technicians to perform maintenance tasks efficiently.

In summary, the Lochinvar 2072,502 stands out for its high efficiency, advanced technology, durability, and flexible installation options. It is an ideal choice for those seeking a reliable and technologically advanced water-heating solution that meets the challenges of contemporary heating demands while promoting energy savings and environmental responsibility.
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